RTLS

Ultra Wide Band

UWB link collection.

Bespoon offers module by uposition and Spoonphone at $50 and up.

Decawave UWB demo video.

Ekahau offers asset tracking.

Essensium offers an accuracy down to 50cm with it's Boomerand module.

Geozondas has a number of products for different applications.

Purelink offers asset tracking and badges. Sewio offers a number of kits.

Sewio packet sniffer localization demo video using 802.15.4a.

Sewio RTLS demo video.

Symeo 1cm precision products.

Time Domain offers the PulsON 330 and 440.

The Russian contender UWBS offers a number of products